What is the 'Neural Link'?

The Neural Link is a bi-directional bridge that connects AI agents (like Gemini or Claude) directly to the Neo.mjs runtime. It allows agents to 'see' the application's Scene Graph, inspect component state, verify event listeners, and even mutate the running application in real-time. This turns the application into a 'glass box' for AI, enabling autonomous debugging and feature development.

Why is Neo.mjs called an 'Application Engine' instead of a framework?

Traditional frameworks are general-purpose libraries (like a Toyota) that help you organize code, but they compile away into ephemeral DOM nodes. Neo.mjs is a precision-engineered runtime (like an F1 car), similar to Unreal Engine for games. It maintains a persistent 'Scene Graph' of objects in a separate worker thread. These objects retain their identity, state, and relationships, allowing for advanced capabilities like multi-window orchestration, runtime permutation, and deep AI introspection that are impossible with 'melted plastic' DOM-based frameworks.

What is 'Context Engineering'?

Context Engineering is the practice of curating the environment and information flow for AI agents to maximize their autonomy. In Neo.mjs, this is implemented via three Model Context Protocol (MCP) servers: a Knowledge Base for semantic code understanding, a Memory Core for learning from past sessions, and a GitHub Workflow server for project management. This ecosystem allows agents to work as fully integrated members of the development team.

What is 'Object Permanence' in the context of Neo.mjs?

In Neo.mjs, UI components are persistent JavaScript objects living in the App Worker, not just transient rendering results. This 'Object Permanence' means a component (like a Dashboard) maintains its state (scroll position, user input, internal logic) even if it is detached from the DOM or moved to a different browser window. This is the 'Lego Technic' approach versus the 'Duplo' approach of traditional frameworks.

What is an 'Agent Operating System'?

Neo.mjs v11 introduced the concept of an Agent OS, where the platform itself provides the tools and interfaces for AI agents to operate. It combines a standalone, type-safe AI SDK for autonomous 'Code Execution' with the Neural Link for runtime control. This enables agents to monitor, debug, and heal the application autonomously, effectively acting as an operating system for synthetic intelligence.

How does Neo.mjs handle multi-window applications?

Neo.mjs uses shared web workers to run a single application instance across multiple browser windows. All windows share the same application state and data in real-time. Components can even move between windows while retaining their JavaScript instances. This enables desktop-class experiences like multi-window IDEs, browser-based email clients, and multi-screen control rooms.

What makes Neo.mjs different from React, Angular, or Vue?

Neo.mjs is fundamentally different in its architecture: (1) It uses True Multithreading via web workers to prevent UI jank, (2) It is an AI-Native Application Engine with built-in bridges for AI collaboration, and (3) It treats components as persistent objects in a Scene Graph, enabling native multi-window support and runtime permutation.

Frontmatter

id	8569
title	bug: Neo.setupClass fails to unwrap non-reactive config descriptors
state	Closed
labels	core
assignees	tobiu
createdAt	Jan 12, 2026, 2:00 AM
updatedAt	Jan 12, 2026, 2:08 AM
githubUrl	https://github.com/neomjs/neo/issues/8569
author	tobiu
commentsCount	1
parentIssue	null
subIssues	[]
subIssuesCompleted	0
subIssuesTotal	0
blockedBy	[]
blocking	[]
closedAt	Jan 12, 2026, 2:08 AM

bug: Neo.setupClass fails to unwrap non-reactive config descriptors

Name: Neo.mjs Application Engine
Author: Neo.mjs

Closed v11.20.0 core

tobiu commented on Jan 12, 2026, 2:00 AM

Neo.setupClass fails to unwrap non-reactive config descriptors in the static config object.

Problem: When a class defines a non-reactive config using a descriptor (e.g., to specify merge: 'deep'), Neo.setupClass correctly identifies the descriptor and applies the unwrapped value to the class prototype. However, it fails to update the static config object (cfg) with the unwrapped value.

Consequence: The static config object retains the full descriptor object (wrapped). When this class is instantiated, initConfig calls mergeConfig. mergeConfig uses staticConfig as the default value. It attempts to merge the wrapped descriptor with the instance's config. This results in a corrupted config object on the instance, where the merged value contains [isDescriptor]: true and value: ... properties, instead of the intended merged structure.

Reproduction: See failed test in test/playwright/unit/container/ItemsMerging.spec.mjs.

Proposed Fix: In src/Neo.mjs, inside setupClass, ensure that cfg[key] is updated with the unwrapped value when a descriptor is processed for a non-reactive config.

tobiu added the bug label on Jan 12, 2026, 2:00 AM

tobiu added the core label on Jan 12, 2026, 2:00 AM

tobiu referenced in commit 11189f1 - "fix: Neo.setupClass non-reactive config descriptor handling (#8569) on Jan 12, 2026, 2:07 AM

tobiu Jan 12, 2026, 2:07 AM

Input from Gemini 3 Pro:

✦ I have fixed the issue where Neo.setupClass failed to unwrap non-reactive config descriptors in the static config object.

Fix Details:

Modified src/Neo.mjs to assign the unwrapped value to cfg[key] when a descriptor is processed for a non-reactive config.

This ensures that staticConfig (used as the default in mergeConfig) contains the correct value structure, not the raw descriptor.

Verification:

Created new unit tests in test/playwright/unit/container/ItemsMerging.spec.mjs.

Verified object-based items conversion.

Verified deep merging of proxy configs (merge: 'deep').

Verified correct merging of nested, descriptor-based non-reactive configs in child components (the core bug).

Verified Neo.mergeConfig isolation logic.

All tests passed. This unblocks the object-based container refactoring.

tobiu assigned to @tobiu on Jan 12, 2026, 2:07 AM

tobiu cross-referenced by #8568 on Jan 12, 2026, 2:08 AM

tobiu removed the bug label on Jan 12, 2026, 2:08 AM

tobiu closed this issue on Jan 12, 2026, 2:08 AM